Roller for controlling strip shape and roller shape design method

Abstract

The invention discloses a roller for controlling the strip shape and a roller shape design method. The axial contour line of the roller surface of the roller is fitted with a composite curve formed bysuperposing a cubic curve and a quintic curve. The roller shape design method comprises the steps that the roller length L and the design radius R of the roller are determined; a roller shape function met by the axial contour line of the roller surface of the roller is established; the roller shape function is corrected and solved to obtain a correction function; and the cylindrical datum plane of the roller is machined according to the correction function. The provided roller is in the composite roller shape formed by superposing the cubic curve and the quintic curve, the roller shape has the characteristic of adjustable secondary convexity of the cubic roller type and the advantage of adjustable high-order convexity of the quintic roller type, meanwhile, the problem of non-uniform abrasion of the roller caused by large roller diameter difference of a cubic roller shape or a quintic roller shape is solved, the strip shape regulation and control capacity of strip rolling is enhanced,the strip shape control capacity of the composite wave shape is particularly improved, and the stress and the abrasion of the roller are uniform.

Description

technical field [0001] The invention relates to the field of roll shape design, in particular to a roll for controlling the shape of a strip. The invention also relates to a roll shape design method. Background technique [0002] In order to obtain flat and uniform strips in the production of metal strips, the distance between the points along the length of the rolls should be equal during the rolling process, that is, to keep the roll gap even, but in the actual rolling process, there are Many factors affect the distance between the two rolls. Therefore, it is necessary to pre-consider the design of the roll to a certain shape according to the relevant conditions to ensure that the roll gap is uniform during the rolling process. This roll shape is called a roll profile. [0003] According to the traditional strip shape control theory: the convexity of the strip is controlled in the upstream frame of the unit, and the flatness of the strip is controlled in the downstream ...

AI Technical Summary

Problems solved by technology

If a cubic CVC roll profile curve is used at the end stand, it can control the middle and side waves of the strip, but the ability to control high-order waves is insufficient. Although the high-order CVC roll profile curve increases the control of high-order waves However, due to the large difference in the roll diameter of the roll body, the contact pressure between the rolls at this time is uneven, which makes the worn roll shape after getting off the machine uneven.

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